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New developments in magmatic processes
Author(s) -
Walker David
Publication year - 1983
Publication title -
reviews of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 8.087
H-Index - 156
eISSN - 1944-9208
pISSN - 8755-1209
DOI - 10.1029/rg021i006p01372
Subject(s) - igneous differentiation , crystallization , metasomatism , geology , fractional crystallization (geology) , geochemistry , partial melting , geophysics , earth science , mantle (geology) , physics , thermodynamics
There has recently been a renewal of interest in a broad spectrum of long‐neglected magmatic processes. Mixing of magmas, Soret differentiation, metasomatism, and assimilation have been rediscovered. Double‐diffusive convection and crystallization boundary layers have been newly recognized as agents in magmatic differentiation. Some of this awareness derives from attention to the requirements of physical plausibility as well as chemical plausibility of magmatic differentiaton models. These new processes are supplementary to the well established crystal fractionation processes: partial melting and partial crystallization. They do not replace them.